content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * --------------------
   * ChartPanelTests.java
   * --------------------
   * (C) Copyright 2004-2009, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 13-Jul-2004 : Version 1 (DG);
   * 12-Jan-2009 : Added test2502355() (DG);
   * 08-Jun-2009 : Added testSetMouseWheelEnabled() (DG);
   */
  
  package org.jfree.chart;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  import java.awt.geom.Rectangle2D;
  import java.util.EventListener;
  import java.util.List;
  
  import javax.swing.event.CaretListener;
  
  import org.jfree.chart.axis.NumberAxis;
  import org.jfree.chart.event.ChartChangeEvent;
  import org.jfree.chart.event.ChartChangeListener;
  import org.jfree.chart.plot.XYPlot;
  import org.jfree.data.xy.DefaultXYDataset;
  import org.junit.Test;
  
  /**
   * Tests for the {@link ChartPanel} class.
   */
  public class ChartPanelTest
          implements ChartChangeListener, ChartMouseListener {
  
      private List<ChartChangeEvent> chartChangeEvents = new java.util.ArrayList<ChartChangeEvent>();
  
      /**
       * Receives a chart change event and stores it in a list for later
       * inspection.
       *
       * @param event  the event.
       */
      @Override
      public void chartChanged(ChartChangeEvent event) {
          this.chartChangeEvents.add(event);
      }
  
  
  
  
  
      /**
       * Test that the constructor will accept a null chart.
       */
      @Test
      public void testConstructor1() {
          ChartPanel panel = new ChartPanel(null);
          assertEquals(null, panel.getChart());
      }
  
      /**
       * Test that it is possible to set the panel's chart to null.
       */
      @Test
      public void testSetChart() {
          JFreeChart chart = new JFreeChart(new XYPlot());
          ChartPanel panel = new ChartPanel(chart);
          panel.setChart(null);
          assertEquals(null, panel.getChart());
      }
  
      /**
       * Check the behaviour of the getListeners() method.
       */
      @Test
      public void testGetListeners() {
          ChartPanel p = new ChartPanel(null);
          p.addChartMouseListener(this);
          EventListener[] listeners = p.getListeners(ChartMouseListener.class);
          assertEquals(1, listeners.length);
          assertEquals(this, listeners[0]);
          // try a listener type that isn't registered
          listeners = p.getListeners(CaretListener.class);
          assertEquals(0, listeners.length);
          p.removeChartMouseListener(this);
          listeners = p.getListeners(ChartMouseListener.class);
          assertEquals(0, listeners.length);
  
          // try a null argument
          try {
              p.getListeners(null);
              fail("A null pointer exception should have been thrown");
          }
          catch (NullPointerException e) {
              // we expect to go in here
          }
      }
  
      /**
       * Ignores a mouse click event.
       *
       * @param event  the event.
       */
      @Override
      public void chartMouseClicked(ChartMouseEvent event) {
          // ignore
      }
  
      /**
       * Ignores a mouse move event.
       *
       * @param event  the event.
       */
      @Override
      public void chartMouseMoved(ChartMouseEvent event) {
          // ignore
      }
  
      /**
       * Checks that a call to the zoom() method generates just one
       * ChartChangeEvent.
       */
      @Test
      public void test2502355_zoom() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.zoom(new Rectangle2D.Double(1.0, 2.0, 3.0, 4.0));
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * Checks that a call to the zoomInBoth() method generates just one
       * ChartChangeEvent.
       */
      @Test
      public void test2502355_zoomInBoth() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.zoomInBoth(1.0, 2.0);
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * Checks that a call to the zoomOutBoth() method generates just one
       * ChartChangeEvent.
       */
      @Test
      public void test2502355_zoomOutBoth() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.zoomOutBoth(1.0, 2.0);
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * Checks that a call to the restoreAutoBounds() method generates just one
       * ChartChangeEvent.
       */
      @Test
      public void test2502355_restoreAutoBounds() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.restoreAutoBounds();
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * Checks that a call to the zoomInDomain() method, for a plot with more
       * than one domain axis, generates just one ChartChangeEvent.
       */
      @Test
      public void test2502355_zoomInDomain() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          XYPlot plot = (XYPlot) chart.getPlot();
          plot.setDomainAxis(1, new NumberAxis("X2"));
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.zoomInDomain(1.0, 2.0);
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * Checks that a call to the zoomInRange() method, for a plot with more
       * than one range axis, generates just one ChartChangeEvent.
       */
      @Test
      public void test2502355_zoomInRange() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          XYPlot plot = (XYPlot) chart.getPlot();
          plot.setRangeAxis(1, new NumberAxis("X2"));
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.zoomInRange(1.0, 2.0);
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * Checks that a call to the zoomOutDomain() method, for a plot with more
       * than one domain axis, generates just one ChartChangeEvent.
       */
      @Test
      public void test2502355_zoomOutDomain() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          XYPlot plot = (XYPlot) chart.getPlot();
          plot.setDomainAxis(1, new NumberAxis("X2"));
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.zoomOutDomain(1.0, 2.0);
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * Checks that a call to the zoomOutRange() method, for a plot with more
       * than one range axis, generates just one ChartChangeEvent.
       */
      @Test
      public void test2502355_zoomOutRange() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          XYPlot plot = (XYPlot) chart.getPlot();
          plot.setRangeAxis(1, new NumberAxis("X2"));
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.zoomOutRange(1.0, 2.0);
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * Checks that a call to the restoreAutoDomainBounds() method, for a plot
       * with more than one range axis, generates just one ChartChangeEvent.
       */
      @Test
      public void test2502355_restoreAutoDomainBounds() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          XYPlot plot = (XYPlot) chart.getPlot();
          plot.setDomainAxis(1, new NumberAxis("X2"));
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.restoreAutoDomainBounds();
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * Checks that a call to the restoreAutoRangeBounds() method, for a plot
       * with more than one range axis, generates just one ChartChangeEvent.
       */
      @Test
      public void test2502355_restoreAutoRangeBounds() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          XYPlot plot = (XYPlot) chart.getPlot();
          plot.setRangeAxis(1, new NumberAxis("X2"));
          ChartPanel panel = new ChartPanel(chart);
          chart.addChangeListener(this);
          this.chartChangeEvents.clear();
          panel.restoreAutoRangeBounds();
          assertEquals(1, this.chartChangeEvents.size());
      }
  
      /**
       * In version 1.0.13 there is a bug where enabling the mouse wheel handler
       * twice would in fact disable it.
       */
      @Test
      public void testSetMouseWheelEnabled() {
          DefaultXYDataset dataset = new DefaultXYDataset();
          JFreeChart chart = ChartFactory.createXYLineChart("TestChart", "X",
                  "Y", dataset);
          ChartPanel panel = new ChartPanel(chart);
          panel.setMouseWheelEnabled(true);
          assertTrue(panel.isMouseWheelEnabled());
          panel.setMouseWheelEnabled(true);
          assertTrue(panel.isMouseWheelEnabled());
          panel.setMouseWheelEnabled(false);
          assertFalse(panel.isMouseWheelEnabled());
      }
  }
  